JP7172378B2 - Chair - Google Patents

Description

The present invention relates to chairs.

Conventionally, as a chair using a pipe material, there is known a chair having four legs and armrests installed between the upper ends of the front legs and rear legs that constitute these four legs (for example, , see Patent Document 1). In this chair, four legs and armrests form an integrated base. The chair has a base to which a seat and backrest can be attached.

However, the chair having such a configuration has a problem that it is difficult to secure a proper and sufficient mounting area between the base portion and the backrest. That is, it is difficult for the base portion to adequately secure a mounting region for the backrest due to its structure, so that it is difficult to secure mounting strength for the backrest.

Furthermore, the base part has a problem that it is difficult to make the appearance of the attachment part of the backrest suitable because of its structure, and the attachment part needs to be covered with upholstery or the like.

JP 2010-259693 A

The present invention has been made in view of the circumstances as described above, and provides a seat support element including a seat, a backrest, and an armrest, which is integrated with the base, and which has a good appearance and excellent mounting strength. To provide a chair configured to be attached in a manner.

That is, the present invention has the following configurations.

The invention according to claim 1 has a base portion in which four vertically extending legs are connected to each other via connecting members and integrated, and on this base portion there is a backrest, a seat, and a left and right leg. The chair is equipped with seated person support elements including armrests, wherein the backrest and the left and right armrests of the seated person support elements are integrally made mainly of synthetic resin. Attachment parts to the base part are provided at the lower end of the backrest and the tip part of the armrest, respectively , and the four legs are connected by two front legs and rear legs. The front leg and the rear leg are provided with a front leg body and a rear leg body made of pipe material, respectively, and formed at the upper ends of the front leg body and the rear leg body, respectively. The mounting portion is inserted into the inner diameter portion of the upper end, and the base portion and the back elbow structure are connected to each other. The outer diameter of the armrest main body and the outer diameter of the main body support frame of the backrest are set to match, and the four legs and the back elbow structure are connected substantially continuously without steps. wherein the backrest comprises a backrest main body and the main body support frames extending downward from both sides of the backrest main body, and connection between the rear legs and the main body support frame The chair is located near the rear corner of the seat .

The invention according to claim 2 is the chair according to claim 1, wherein the horizontal distances between the four legs are set so as to gradually increase from the upper end to the lower end.

As described above, according to the present invention, the seat, backrest, and occupant support elements including the armrests can be attached to the integrated base in an aesthetically pleasing manner and with excellent attachment strength. It will be possible to provide a chair that has been

1 is a perspective view showing one embodiment of the present invention; FIG. The right side view in the same embodiment. The front view in the same embodiment. The top view in the same embodiment. The perspective view in the same embodiment. The disassembled perspective view in the same embodiment.

An embodiment of the present invention will now be described with reference to FIGS.

In this embodiment, the present invention is applied to a chair A that can be suitably used in meetings and the like.

A chair A has four vertically extending front legs 1 and left and right rear legs 2 connected to a front connecting member 3, a rear connecting member 4, and left and right side connecting members 5 and 6. A seated person support element Y including a backrest 7, left and right armrests 8, and a seat 9 is attached to the base portion B. be. Among the seated person support elements Y, the backrest 7 and the left and right armrests 8 constitute a back elbow structure K integrally made mainly of synthetic resin. The lower end of the backrest 7 and the tip of the armrest 8 are provided with inserted portions 73 and 82 as attachment portions to the base portion B. As shown in FIG.

Here, "mainly composed of synthetic resin" means that the main material is synthetic resin, but other materials such as metal materials for increasing strength may be included. .

The chair A will be described in detail below.

The front leg 1 includes a front leg body 11 made of a pipe material and casters 12 attached to the lower end of the front leg body 11. - 特許庁The upper end portion of the front leg body 11 is provided with an upper inner diameter portion 11a into which an inserted portion 82, which is a mounting portion provided at the tip portion of the armrest 8, is inserted.

The rear leg 2 includes a rear leg body 21 made of pipe material and casters 22 attached to the lower end of the rear leg body 21 . The upper end portion of the rear leg body 21 is provided with an upper inner diameter portion 21a into which an inserted portion 73, which is a mounting portion provided at the lower end portion of the backrest 7, is inserted.

The horizontal distance between the left and right front legs 1 and the left and right rear legs 2, which are the four legs, is set so as to gradually increase from the upper end to the lower end.

The front connecting member 3 is made of a pipe member extending in the left-right direction. The front connecting member 3 connects the left and right side connecting members 5 and 6 . The front connecting member 3 is arranged substantially parallel to the rear connecting member 4 . The front connecting member 3 is arranged in front of the rear connecting member 4 . The left and right ends of the front connecting member 3 are welded to the left and right side connecting members 5 and 6 .

The rear connecting member 4 is made of a pipe material extending in the left-right direction. The rear connecting member 4 connects the left and right side connecting members 5 and 6 . The rear connecting member 4 is arranged substantially parallel to the front connecting member 4 . The rear connecting member 4 is arranged behind the front connecting member 3 . The left and right ends of the rear connecting member 4 are welded to the left and right side connecting members 5 and 6 . The rear connecting member 4 rotatably supports the seat 9 between the normal position and the raised position. That is, the intermediate portion in the left-right direction of the rear connecting portion 4 also serves as the rotating shaft of the seat 9 .

The left and right side connecting members 5 and 6 are made of pipe members extending in the front-rear direction. Left and right side connecting members 5 and 6 connect the front leg 1 and the rear leg 2 . The front end portions of the left and right side connecting members 5 and 6 are welded to the front leg body 11 , and the rear end portions of the left and right side connecting members 5 and 6 are welded to the rear leg body 21 .

The back elbow structure K is formed integrally with the backrest 7 and the armrest 8 mainly using synthetic resin.

The backrest 7 has a horizontally long rectangular shape when viewed from the front, and includes a backrest main body 71 formed in a plate shape, column-shaped main body support frames 72 extending downward from both sides of the backrest main body 71, and a main body support frame. An inserted portion 73 serving as a mounting portion protrudes downward from the lower end portion of 72 .

The backrest main body 71 has a peripheral frame portion that has an outer shape of a pipe material when viewed from the back side, surrounds the left and right side end portions and the upper end portion, and has both the left and right lower end portions that are continuous with the upper end portion of the main body support frame 72; and a plate-like portion arranged inside the peripheral frame portion. The inserted portion 73 is columnar and has a diameter smaller than that of the main body support frame 72 . The inserted portion 73 extending downward from the lower end of the main body support frame 72 is formed with a plurality of vertically extending recessed portions 73a at intervals so that it can be easily inserted into the upper inner diameter portion 21a of the rear leg 2. ing.

The armrest 8 includes an armrest main body 81 extending forward from the backrest 7 and having an upper surface functioning as an armrest, and an inserted portion 82 serving as a mounting portion projecting downward from the tip of the armrest main body 81. there is

The armrest main body 81 is connected to the left and right outer surfaces of the lower end of the backrest main body 71 at its rear end portion, which is the base end portion. The armrest main body 81 has a horizontally extending portion 81a extending substantially horizontally forward from the backrest 7 when viewed from the side, and is bent inward from the distal end portion of the horizontally extending portion 81a when viewed from above. and a downward extending portion 81b extending downward along a curved line so as to form an inwardly convex shape when viewed from the front and from the side. The inserted portion 82 extending downward from the lower end of the lower extending portion 81b is formed with a plurality of vertically extending recessed portions 82a spaced apart from each other so as to be easily inserted into the upper inner diameter portion 11a of the front leg 1. ing.

The seat 9 is made of synthetic resin. The seat 9 includes a seat body 91 having a seating surface formed on the upper surface thereof, and a shaft support portion 92 provided on the lower surface of the seat body 91 and functioning as a rotation shaft and supporting a laterally intermediate portion of the rear connecting member 4. . The upper surface and peripheral edge of the seat 9 are covered with a skin material (not shown) as necessary.

Thus, the back elbow structure K integrally configured with the backrest 7 and the armrest 8 is provided in the base portion B with the inserted portions 73 and 82 serving as the mounting portions provided in the back elbow structure K. It can be connected to the base portion B by inserting it into the upper inner diameter portions 21a and 11a.

Further, in this embodiment, the outer diameter of the upper end portion of the front leg body 11 and the outer diameter of the armrest body 81 are set to approximately the same value, and the outer diameter of the upper end portion of the rear leg body 21 and the backrest are set to approximately the same values. 7 and the outer diameter of the main body support frame 72 is set to a value that substantially matches. For this reason, the left and right front legs 1, the left and right rear legs 2, and the dorsal elbow structure K, which are four legs, are connected in a state in which the outer surfaces are substantially flush and continuous without causing a step at the connecting portion. It has become a thing.

In addition, in the chair A of this embodiment, the connecting portion between the left and right front legs 1 and the downwardly extending portion 81b of the armrest main body 81 is located at a position separated downward from the horizontally extending portion 81a. In addition, the connecting portions of the left and right rear legs 2 and the main body support frame 72 of the backrest 7 are positioned near the rear end corners of the seat 9 . Therefore, the portion that touches the seated person is mainly composed of the back elbow structure K, that is, synthetic resin. For this reason, with this chair A, the seated person does not feel the coldness of the metal or the like when seated. ing.

As described above, the chair A according to the present embodiment has four longitudinally extending front legs 1 and left and right rear legs 2 connected to front connecting members 3 and rear connecting members 4 . , and a base portion B that is integrally connected to each other via left and right side connecting members 5 and 6 . A seated person support element Y including a backrest 7, left and right armrests 8, and a seat 9 is mounted on the base portion B. As shown in FIG. Among the seated person support elements Y, the backrest 7 and the left and right armrests 8 constitute a back elbow structure K integrally made mainly of synthetic resin. Inserted portions 73 and 82 as attachment portions to the base portion B are provided at the lower end portion of the backrest 7 and the tip portion of the armrest 8, which constitute the back elbow structure K, respectively. For this reason, the chair is constructed so that it can be attached to the integrated base portion B in a manner that is aesthetically pleasing and has excellent attachment strength. A can be provided. That is, the base portion B is integrated, and the seated person support element Y can be attached to the integrated base portion B. Therefore, a chair having a simple structure and excellent rigidity is realized. It is easy to do. Moreover, the backrest 7 and the pair of left and right armrests 8 are integrally formed mainly of synthetic resin. For this reason, both sides of the backrest 7 in this embodiment are unlikely to have a complicated structure in which the mounting portions of the backrest and the armrests and the mounting portions of the backrest and the rear legs are concentrated as in the conventional art. It is excellent in the degree of freedom of design that simplifies the Moreover, with the configuration shown in this embodiment, the mounting portion of the dorsal elbow structure K to the base portion B tends to be visually inconspicuous. There is no need to hide it.

Four legs are constituted by left and right front legs 1 and rear legs 2, and the front legs 1 and rear legs 2 are provided with a front leg body 11 and a rear leg body 21 made of pipe material, respectively. Inserted portions 82 and 73, which are attachment portions, are inserted into upper inner diameter portions 11a and 21a formed at the upper end portions of the front leg body 11 and the rear leg body 21, respectively, and the base portion B and the dorsal elbow structure K are attached to each other. are connected. For this reason, the two front legs 1 and the rear legs 2, which are four legs, are connected to each other not only by the front and rear connecting members 3, 4 and the left and right connecting members 5, 6, but also by the back elbow structure K. Therefore, the rigidity of the chair A as a whole is extremely high.

The outer diameters of the upper ends of the front leg body 11 and the rear leg body 21 are set to match the outer diameter of the armrest body 81 of the armrest 8 and the body support frame 72 of the backrest 7 . The left and right front legs 1 and the left and right rear legs 2, which are four legs, and the dorsal elbow structure K are connected substantially continuously without steps. Therefore, a continuous appearance is created without the appearance of steps that tend to impair the visually good appearance, and the appearance is excellent.

The horizontal distance between the left and right front legs 1 and the left and right rear legs 2 is set so as to gradually increase from the upper end to the lower end. For this reason, the joints between the back elbow structure K and the four legs 1 and 2, that is, the inserted portions 73 and 82 of the back elbow structure K and the upper inner diameter portions 11a and 21a of the base portion B gently expand downward. Therefore, after connecting the back elbow structure K to the base portion B, the back elbow structure K does not easily come off from the base portion B.

The present invention is not limited to the embodiments detailed above.

The specific shapes of the backrest and armrests can adopt various shapes, and are not limited to those shown in the above-described embodiments.

Various configurations can be applied to the configuration of the connecting member that connects the four legs, and the configuration is not limited to that shown in the above-described embodiment.

A base frame may connect the lower ends of the front legs and the rear legs of the four legs.

The pipe material is not limited to one having substantially the same outer diameter at any point in the extending direction. For example, the pipe material may be constructed such that the external dimensions gradually increase from one end to the other end.

In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications are possible without departing from the scope of the present invention.

A... Chair B... Base part Y... Seated person support element K... Back elbow structure 1... Front leg 2... Rear leg 7... Backrest 8... Armrest

Claims (2)

A seat occupant support including a backrest, a seat, and left and right armrests on the base part, which has a base part in which four legs extending in the vertical direction are connected to each other through connecting members. A chair fitted with elements,
Among the seated person support elements, the backrest and the left and right armrests constitute a back elbow structure integrally made mainly of synthetic resin,
Attachment portions to the base portion are provided at the lower end portion of the backrest and the tip portion of the armrest, respectively ,
The four legs are composed of two front legs and rear legs,
The front leg and the rear leg each have a front leg body and a rear leg body made of pipe material,
The mounting portion is inserted into upper inner diameter portions formed at the upper end portions of the front and rear legs, respectively, and the base portion and the back elbow structure are connected to each other,
The outer diameters of the upper ends of the front and rear legs are set to match the outer diameters of the armrest main body of the armrest and the main body support frame of the backrest. The leg and the back elbow structure are connected substantially continuously without a step,
The backrest comprises a backrest main body and the main body support frames extending downward from both sides of the backrest main body,
A chair in which a connecting portion between the rear leg and the main body support frame is located near the rear end corner of the seat . 2. The chair according to claim 1, wherein the horizontal distances between the four legs are set so as to gradually increase from the upper end to the lower end.

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